Dahon Kinetix Pro Aluminium Rim Colour Magnesium, paired 14 H as fitted to Dahon Mu SL front wheel. Deep Braking surface to Suit Pantour Suspension Hub Made from a niobium alloy (Nb-Al T10) that is almost twice as strong as 6061-T6 aluminum, our Kinetix ProLite rims are among the lightest and strongest rims in the world. Double walls and a CNC machined braking surface are of course standard. An added bonus is that niobium alloy is substantially more corrosion resistant than standard aluminum.